I have a couple of different moisture meters here where I work to check moisture before we ship to ensure moisture is low. I have recently had a problem and am finding that my meters are not accurate and are reading about 2.5 less then what the actual is when it comes out of the oven. We leave our lumber in an unheated storage barn and as we live in Canada it is very cold.
I asked a company in Holland that sells moisture meters if the weather has anything to do with why the meters are not working and the guy told me that the moisture inside the wood freezes and I will not get a correct reading. I funny thing is I have done this job for the past five years and have never had this kind of a problem (that I know of). Does anyone have any insight to this or know anything about this?
(Sawing and Drying Forum)
From contributor R:
Iím not sure if this will help but my meter says you have to make allowances for ambient air temperature.
Incidentally, it is the wood temperature and not the air temperature that matters. Of course, sometimes they are equal. Sometimes if the meter or wires are cold and the brought into a warmer and more humid room, moisture will condense in the wire or meter and give a false reading.